The impact of kin proximity on net marital fertility and maternal survival in Sweden 1900-1910 – Evidence for cooperative breeding in a societal context of nuclear families, or just contextual correlations?
ObjectiveWe investigate the association between the geographic proximity of the grandparents on net marital fertility and maternal survival in Sweden, 1900–1910, within the framework of the cooperative-breeding-hypothesis.MethodsData were derived from Swedish full-count censuses (1880–1910) and the Swedish Death Index. Married couples were linked to their parental households. Poisson and logistic